Artificial leg



(No Model.)

J. MGGUIRE. ARTIFICIAL LEG.

No. 521,446. Patented Junelz, 1894.

me NATwNAL LwHoaRAPmNG oamvmw. wAsmNafoN. nA c:4

Usiirsn STATES- PATENT OFFICE.

JOHN MCGKUIRE, OF ST. PAUL, MINNESOTA.

ARTIFICIAL LEG.

SPECIFICATION forming part of Letters Patent No. 521,446, dated June 12,1894.

Application filed June 5, 1893i Serial No. 476,572. (No model.)

To all whom t may concern.-

Be it known that I, JOHN MCGUIRE, of St. Paul, Ramsey county, Minnesota,have invented certain Improvements in Artificial Legs, of which thefollowing is a specification.

My invention relates to improvements in artificial legs, its objectbeing to provide improved means for the elastic support of the stumptherein, and to prevent chating.

To this end my invention consists in arranging in the hollow shell ofthe artificial leg, an open end socket or corset which slides freelytherein and may be bound upon the stump of the natural leg. This socketor corset is connected to the artificial leg by means of elastic strapsattached to the lower end of the socket and the upper portion of theleg, preferably by means of projections upon the socket extendingthrough vertical slots in the shell of the leg, to which the lower endsof the elastic straps are secured. My invention further consists in thecon struction and combination hereinafter particularly described andclaimed.

In the accompanying drawings forming part of this specification, Figure1 represents a side elevation of my improved device, for use in case ofan amputation below the knee. Fig. 2 is a similar view of my deviceadapted for use in case of an amputation above the knee, and Fig. 3 is asectional detail of Fig. 1.

In the drawings A represents the artificial leg, which is made of anysuitable material, its upper part 2 being a hollow shell. Through theside Walls of the shell 2 are formedl the vertical slots 3 andVentilating openings l0.

B represents the corset which surrounds the thigh in the constructionshown in Fig. l,

l and which is connected to the legA by means of the joints C, the uppermembers 4 of which are secured to the corset and the lower members 5 tothe leg. Arranged in the shell 2 of the leg is the open end socket orcorset D provided with suitable lacing 6, to -fit the same to the stump,and provided with projections 7 which extend through the slots 3.Secured at the lower end to the projections 7, and at the other to thetop of the shell 2, are elastic straps 9, which thus serve as supportsfor the socket in the leg.

use in case of an amputation above the knee,

the shell l2 of the leg E turns in the top of the lower portion 13 oftheleg and is connected thereto by the joints 1l.

G represents the stump socket or corset which Works in the shell l2, andis supported elastically therein by means of the elastic` relieved fromthe pressure and incunnbrance` of unnecessary straps as in the commonconstruction. f

Iclaiml. The combination of the corset, or socket open at both ends,adapted to be laced upon the stump, and fitted to and working in theartificial leg, and the elastic straps attached to said leg and corsetand serving as a support for the latter, substantially as described.

2. The combination with the hollow artificial leg, of the corset orsocket open at both ends adapted to be laced upon the stump and workingin said leg, and elastically supported therein, substantially asdescribed.

3. The combination with the hollow artid; cial leg, having verticalslots therethrough, of the corset adapted to be laced upon the stump,and fitted to and slid able in said leg, the spurs upon said socketprojecting through said slots, and the elastic straps secured at one endto said spurs and at the other to the upper part of said leg,substantially as described.

In testimony whereof I have hereunto set my hand this 27th day of May,1893.

JOHN MQGUIRE.

Witnesses:

T. D. MERWIN, H. S. JOHNSON.

